Which reaction among the following is correct?
- A$CH_2=CH_2 \xrightarrow{Br_2} HO-CH_2-CH_2-Br$
- B$CH_3-CH=CH_2 \xrightarrow[R_2O_2]{HBr} CH_3-CH(Br)-CH_3$
- C$CH_3-CH=CH_2 \xrightarrow[H_2O_2/OH^{-}]{BH_3.THF} CH_3-CH_2-CH_2-OH$
- D$CH_3-CH=CH_2 \xrightarrow{HBr} CH_3-CH_2-CH_2-Br$
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